Added manage-state-with-redux tutorial doc

[rossmc]

Description

Add manage-state-with-redux doc for new tutorial series to help beginners (#2021)

Related Issue

Closes #2078.

Acceptance

Verification Stakeholders

@jcalcaben

Specification

Add Tutorial Doc

Verification Steps

1. Review pwa-devdocs/_drafts/pwa-studio-fundamentals/manage-state-with-redux

Screenshots / Screen Captures (if appropriate)

Checklist

• I have updated the documentation accordingly, if necessary.
• I have added tests to cover my changes, if necessary.

[PWAStudioBot]

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[jcalcaben]

@rossmc This may need to be updated since PWA Studio now provides state data through context hooks: https://github.com/magento/pwa-studio/tree/develop/packages/peregrine/lib/context

Let me know if you don't have the bandwidth to do the update.
I can still accept this as-is since it's just a draft, but I will need to update the majority of the content before publishing.

[rossmc]

@jcalcaben I wasn't aware of context hooks, thanks! I need to research them a bit :)

I probably won't get a chance to look at it for next week or two.

Happy for you to accept as-is.